package com.jr.filter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebFilter;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/aaa")
public class TestServlet extends HttpServlet {
    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        System.out.println("请求到达TestServlet,即将处理请求");
        req.setAttribute("str","req-value");
        req.setAttribute("str","req-newvalue");
        req.removeAttribute("str");
    }
}
